Blue Line 0300-4003 M10×1.25 engine hanger hex flange lock nut for CSC go. and compatible 139QMB scooters, showing hex body and flanged base Blue Line 0300-4003 M10×1.25 engine hanger hex flange lock nut for CSC go. and compatible 139QMB scooters, showing hex body and flanged base
Blue Line 0300-4003 M10×1.25 engine hanger hex flange lock nut for CSC go. and compatible 139QMB scooters, showing hex body and flanged base

Chicago Scooter Company

Blue Line M10×1.25 Hex Flange Lock Nut - 139QMB

SKU 0300-4003
$2.00
Shipping calculated at checkout.
Description

This Blue Line engine hanger lock nut replaces worn or damaged mounting hardware on your CSC go. or a compatible 139QMB scooter. Its M10 × 1.25 thread matches the corresponding engine hanger bolt, while the flanged base and hex body provide a compact replacement for your engine-mount service.

Key Features

  • Blue Line replacement: Aftermarket engine hanger hardware for CSC go. and compatible scooter mounts.
  • Defined thread size: M10 diameter with a 1.25 mm pitch helps you match the correct bolt.
  • Flanged base: Broad base provides the bearing surface at the mounting point.
  • Hex body: Allows wrench or socket engagement during installation and removal.

Technical Specifications

  • Brand: Blue Line
  • Part number: 0300-4003
  • Part type: Engine hanger flange lock nut
  • Classification: Aftermarket replacement
  • Nominal thread diameter: M10
  • Thread pitch: 1.25 mm
  • Design: Hex body with flanged base

Compatibility

Application Fitment requirement
Chicago Scooter Company go. Matching engine hanger bolt with M10 × 1.25 thread
Compatible 139QMB / QMB139 scooters Engine hanger mounting arrangement requiring an M10 × 1.25 flange lock nut

 

Match the thread size and mounting arrangement to your original hardware before ordering. An engine code alone does not establish chassis fitment. Follow the vehicle manufacturer's tightening and lock-nut replacement instructions.
Product Diagrams
Features
  • Blue Line aftermarket engine hanger lock nut
  • M10 thread diameter with 1.25 mm pitch
  • Hex body with flanged base
  • For CSC go. and compatible dimension-matched 139QMB mounts
Specifications

Brand: Blue Line; Part number: 0300-4003; Type: engine hanger flange lock nut; Classification: aftermarket replacement; Thread diameter: M10; Thread pitch: 1.25 mm; Design: hex body with flanged base; Application: CSC go. and compatible 139QMB / QMB139 scooter mounts
Model Fitments

Chicago Scooter Company go.; compatible 139QMB / QMB139 scooters requiring an M10 × 1.25 engine hanger flange lock nut; verify mounting arrangement
  • Same day shipping for orders placed before 2PM (CST) M-F
  • 30-day return period on eligible items
  • Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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